Navigation and saved instance data

Question

The application has 2 actions, A and B.

A has instance data stored

@Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putInt("foo", 0); } 

and A has

 int bar; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // ... if (savedInstanceState != null) { bar = savedInstanceState.getInt("foo"); } else { bar = -1; } } 

for data recovery.

In action B, the action bar and

 @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); getActionBar().setDisplayHomeAsUpEnabled(true); // ... } 

to enable navigation. A is also indicated as the parent activity of B in AndroidManifest.xml .

When a user moves from A to B onSaveInstanceState , and if they return to A using the active back button, A correctly restores the saved information.

However, when the user navigates from A to B onSaveInstanceState , and then the navigation is used up to return to onCreate(Bundle savedInstanceState) , null is transmitted, even though the information has been saved.

How do I navigate to pass the package created on onSaveInstanceState ?